The information on this page is based on a number of underlying datasets, most of which are updated monthly. We maintain an update schedule which explains which version of each dataset we are currently relying on.
509 HOWLANDS is a very small terraced house of 73m², built sometime between 1950 and 1966, which could now be worth an estimated £353,917. It was last sold for £320,000 in September 2019, which was around 10% below the average September 2019 terraced price in the Welwyn Hatfield local authority area. The most recent EPC inspection was September 2014, where the current energy rating was D, and the potential energy rating was C.
Land registry data shows five sales for 509 HOWLANDS since 1st January 1995. The below table shows the price paid for the five sales, along with the average terraced price in the Welwyn Hatfield local authority area for the corresponding sale date. All of the five 509 HOWLANDS sales were for below the average price. The average price is sourced from the Office for National Statistics' House Price Index (HPI).
| Date | Price | HPI Price | Variation from HPI |
|---|---|---|---|
2019 20 SEP | £320,000 | £354,779 | 10% below HPI |
2015 13 OCT | £285,000 | £300,700 | 5% below HPI |
2007 24 JAN | £191,000 | £202,158 | 6% below HPI |
2006 21 JUL | £179,950 | £200,722 | 10% below HPI |
2002 15 JAN | £123,500 | £125,376 | 1% below HPI |
The below graph shows the average terraced house price in the Welwyn Hatfield local authority area over time, sourced from the HPI. The five 509 HOWLANDS sales between January 2002 and September 2019 have been plotted on the graph. A line has been extrapolated to show what the value of the property might have been over time, following each sale, had it maintained the same margin above or below the HPI (as a percentage). For example, the October 2015 sale was for 5% below the HPI. So the extrapolation line tracks at 5% below the HPI over time, until the September 2019 sale, where it falls to 10% below the HPI. The line then continues to track at 10% below the HPI.

509 HOWLANDS might now be worth an estimated £353,917.
This is based on house price inflation of 10.6%, between September 2019 and July 2025, for terraced houses, in the Welwyn Hatfield local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 10.6% inflationary increase is applied to the most recent sale price for 509 HOWLANDS of £320,000 on 20th September 2019. For the value to have increased from £320,000 to £353,917 over the six years and two months to July 2025, the following assumptions must hold true:
509 HOWLANDS is 73m² according to the EPC inspection conducted in September 2014. This puts it in the smallest 10% of terraced houses houses in Welwyn Garden City, based on EPC data. The below chart shows the distribution of terraced houses houses by size in Welwyn Garden City, and where 509 HOWLANDS lies on this distribution: 3% of terraced houses houses are smaller than 509 HOWLANDS, and 97% of houses are larger. Note that EPC data is not available for all properties in Welwyn Garden City.

509 HOWLANDS sits on a plot of roughly 0.050 of an acre, or 201m². The below map shows the location of 509 HOWLANDS, an approximate outline of the building(s), and the indicative extent of the property. The plot extent is a Land Registry INSPIRE Index Polygon, and it is important to note that a title may include more than one polygon, whereas only one polygon is shown on the map (the polygon which intersects with the position of 509 HOWLANDS). The full extent of the land contained in any registered title can only be identified from the individual title plan. The maps on this page should not be relied upon to establish the extent of a title.

509 HOWLANDS is located in WELWYN GARDEN CITY, in the AL7 postcode district. The below map shows the position of No. 509 on HOWLANDS.

Most recent sales first: